aptitude synaptic gnome to be removed?

[Jason Edson <jasonedson@gmail.com>]

I just did a dist-upgrade on my unstable box and for some reason apt
wanted to remove gnome, synaptic, aptitude and I think one other. Has
any one else had this problem or can someone tell me the reason why?
Thank you

PS: Heres my sources.list

#kde-3.4.1
deb http://pkg-kde.alioth.debian.org/kde-3.4.1 ./

deb http://debian.oregonstate.edu/debian/ unstable main non-free contrib
deb-src http://debian.oregonstate.edu/debian/ unstable main non-free contrib

deb http://security.debian.org/ stable/updates main contrib non-free